Can create object using C++ CoCreateInstance, but not using C# Activator.CreateInstance

[Abhijeet Dev]

Re: Can create object using C++ CoCreateInstanc e, but not using C# Activator.Creat eInstance

Try applying ComImportAttrib ute to this type.

"Õíϼ¾ÉÓÑ" <xu0577@21cn.co m> wrote in message
news:u0z55CR0DH A.1660@TK2MSFTN GP09.phx.gbl...[color=blue]
>
> "Brian Rogers" <none@none.co m> дÈëÏûÏ¢ÐÂÎÅ
> :#wfupbBuDHA.20 60@TK2MSFTNGP10 .phx.gbl...[color=green]
> > Hello everyone,
> >
> > I apologize for the cross and re-post, but I am still searching for an
> > answer.
> >
> > Why can C++ can create this object, but C# can't?
> >
> > I am trying to create an instance of the default FTP asynchronous[/color]
> pluggable[color=green]
> > protocol adaptor, so I can analyse the traffic between urlmon.dll (IE)[/color][/color]
and[color=blue][color=green]
> > the FTP server. The language I am attempting to use is C#.
> >
> > The CLSID for the adaptor (as referenced in the protocol registry key)[/color][/color]
is[color=blue][color=green]
> > {79eac9e3-baf9-11ce-8c82-00aa004ba90b} and is stored as[/color][/color]
CLSID_FtpProtoc ol.[color=blue][color=green]
> >
> > If I use the following unmanaged C++ code, I can create an instance of[/color][/color]
the[color=blue][color=green]
> > filter.
> >
> > HRESULT result;
> > LPUNKNOWN _pUnk = NULL;
> > CoInitialize( NULL);
> > result = CoCreateInstanc e( CLSID_FtpProtoc ol,
> > NULL,
> > CLSCTX_INPROC_S ERVER,
> > IID_IInternetPr otocol,
> > (LPVOID*)&_pUnk );
> >
> > If I use the following C# code, I receive an error.[/color][/color]
(OutOfMemoryExc eption)[color=blue][color=green]
> >
> > Guid IID_IInternetPr otocolInfo = new
> > Guid("{79eac9e3-baf9-11ce-8c82-00aa004ba90b}") ;
> > objType = Type.GetTypeFro mCLSID(IID_IInt ernetProtocolIn fo);
> > Activator.Creat eInstance(objTy pe);
> >
> > Any thoughts would be greatly appreciated.
> >
> > Thanks,
> > Brian.
> >
> >
> >
> >[/color]
>
>[/color]